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Technical training.Product information.F12 PowertrainBMW Service

General informationSymbols usedThe following symbol is used in this document to facilitate better comprehension or to draw attentionto very important information:Contains important safety information and information that needs to be observed strictly in order toguarantee the smooth operation of the system.Information status and national-market versionsBMW Group vehicles meet the requirements of the highest safety and quality standards. Changes inrequirements for environmental protection, customer benefits and design render necessary continuous development of systems and components. Consequently, there may be discrepancies betweenthe contents of this document and the vehicles available in the training course.This document basically relates to the European version of left hand drive vehicles. Some operating elements or components are arranged differently in right-hand drive vehicles than shown in the graphicsin this document. Further differences may arise as the result of the equipment specification in specificmarkets or countries.Additional sources of informationFurther information on the individual topics can be found in the following: Owner's Handbook Integrated Service Technical Application.Contact: conceptinfo@bmw.de 2010 BMW AG, MunichReprints of this publication or its parts require the written approval of BMW AG, München.The information contained in this document forms an integral part of the technical training of the BMWGroup and is intended for the trainer and participants in the seminar. Refer to the latest relevant information systems of the BMW Group for any changes/additions to the technical data.Status of the information: November 2010VH-23/International Technical Training

F12 PowertrainContents1.Drivetrains. 11.1.Models. 11.1.1.Gasoline engines. 1Further information. 21.2.2.Engine. 32.1.N63 engine. 32.1.1.Technical data. 4Full load diagram. 52.1.2.Engine designation and engine identification. 62.2.2.2.1.Engine designation. 6Engine identification. 72.2.2.3.Automatic transmission. 8Designation. 83.1.3.2.Variants. 8GA8HP transmission. 83.3.3.3.1.Technical data.103.4.Transmission emergency release. 103.4.1.Mechanical transmission emergency release. 103.4.2.Electronic transmission emergency release. 123.5.Gear selector switch. 134.Manual transmission. 144.1.Designation. 14Variants.144.2.4.3.G manual transmission. 144.3.1.Technical data.154.4.Gearshift. 165.Rear axle final drive. 175.1.Designation. 175.2.Variants.175.3.Lightweight construction, rear axle final drive. 176.Driveshafts. 186.1.Driveshaft.186.1.1.Overview. 186.1.2.Crash function. 196.2.Output shafts. 196.2.1.Designation. 19

F12 PowertrainContents6.2.2.6.2.3.Variants. 19Overview. 19

F12 Powertrain1. DrivetrainsF12 Drive1.1. Models1.1.1. Gasoline engines640i (available 9/2011)650iN55B30M0N63B44O0Power KW/bhp235/315300/402Torque Nm/ ic transmissionGA8HP45ZGA8HP70ZRear axle final driveHAG 205ALHAG 225ALEngineExhaust emission standardsManual gearbox1

F12 Powertrain1. Drivetrains1.2. Further informationThe descriptions of the engines and the eight-speed automatic transmission can be found in the following technical training manuals:2 ST916 N55 engine ST610 covers the N63 engine ST914 F07 covers the GA8HP Automatic Transmission.

F12 Powertrain2. Engine2.1. N63 engineN63 engineFirst introduced with the X6, the N63 engine is the successor to the N62 engine. It is the first engineworldwide to feature an optimized package for integration of the turbochargers and main catalytic converters within the engine valley. The location of the turbochargers and catalytic converters (in the “v”space between the banks) means the locations of the intake and exhaust ports have been reversed. Inaddition, the resulting short pipe lengths and large cross-sections minimize the pressure losses on theintake and exhaust ports.Special features: Implementation in all model series (E71/E72, F01/F02, F04, F07/, F10) Twin exhaust turbochargers in the engine valley Catalytic converters are also mounted in the engine valley High Precision Direct fuel injection with piezoelectric injectors MSD85 engine control, liquid-cooled and FlexRay capable Indirect charge air cooling3

F12 Powertrain2. Engine2.1.1. Technical dataDesignValves per cylinderEngine controlN63B44O0F12, 650iV8V844ME9.2.3MSD85Displacement[cm ]47994395Stroke/bore[mm]88.3/93.088.3/89.0Power output at speedkW/bhp[rpm]270/3676300300/4005500 - 6400Torque at speedNm/ft-lbs[rpm]490/3613400600/4501750 – 4500Compression ratio[ε]10.5 : 110.0 : 1ROZ 91 – 98ROZ 91 – 98ULEV llULEV ll12.6/10.9-/10.75.5/5.65.03Fuel gradeExhaust emission standards4N62B48O1E64, 650iFuel consumption complying withEU combined(manual/automatic transmission)[l/100 km]Acceleration 0 – 100 km/h(manual/automatic transmission)[s]

F12 Powertrain2. Engine2.1.2. Full load diagramCompared to its predecessor the N62 engine, the N63 engine is characterized by a significantly higheroverall power output and boasts a linear torque curve.Full load diagram of E64 650i with N62B48O1 engine compared to F12 650i with N63B44O0 engine.5

F12 Powertrain2. Engine2.2. Engine designation and engine identification2.2.1. Engine designationIn the technical documentation, the engine designation is used to ensure unambiguous identificationof the engine. In frequent cases, however, only a short designation is used. This short form is used soan engine can be identified as belonging to a specific engine family.6ItemMeaningIndexExplanation1Engine developerM, NPSWBMW GroupBMW M SportBMW M GmbHBought-in engines2Engine type1456784-cylinder in-line engine (e.g. N12)4-cylinder in-line engine (e.g. N43)6-cylinder in-line engine (e.g. N55)V8 engine (e.g. N63)V12 engine (e.g. N74)V10 engine (e.g. S85)3Change to the basicengine concept01 – 9Basic engineChanges, e.g. combustion process4Working method orfuel type and possiblyinstallation positionBDHgasoline, longitudinally mountedDiesel, longitudinally mountedHydrogen5 6Displacement in 1/10liter303.0 liter7Performance classKUMOTSLowestLowerMiddleUpper (standard)TopSuper8Revision relevant toapproval01 – 9New developmentRedesign

F12 Powertrain2. Engine2.2.2. Engine identificationThe engines have an identification mark on the crankcase to ensure unambiguous identification andclassification.This engine identification is also necessary for approval by government authorities. With the N55 engine, this identification has been subject to a further development, with the previous eight positionsbeing reduced to seven. The engine number can be found on the engine below the engine identification. This consecutive number, in conjunction with the engine identification, permits unambiguousidentification of each individual engine.ItemMeaningIndexExplanation1Engine developerM, NPSWBMW GroupBMW M SportBMW M GmbHBought-in engines2Engine type1456784-cylinder in-line engine (e.g. N12)4-cylinder in-line engine (e.g. N43)6-cylinder in-line engine (e.g. N55)V8 engine (e.g. N63)V12 engine (e.g. N74)V10 engine (e.g. S85)3Change to the basicengine concept01 – 9Basic engineChanges, e.g. combustion process4Working method orfuel type and possiblyinstallation positionBDHgasoline, longitudinally mountedDiesel, longitudinally mountedHydrogen5 6Displacement in 1/10liter303.0 liter7Type approval matters(changes which require a new type approval)AB – ZStandardAs required, e.g. RON877

F12 Powertrain3. Automatic transmission3.1. DesignationA unique designation is used for the transmission in the technical documentation so it can be clearlyidentified. In frequent cases, however, only a short designation is used. This short form is used so thetransmission can be assigned to a transmission family. The GA8HP transmission family, consisting ofthe GA8HP45Z, GA8HP70Z and GA8HP90Z transmissions for example, is often Transmission2Type of transmissionAAutomatic transmission3Number of gears68Six forward gearsEight forward gears4Type of transmissionHPLRHydraulic planetary gear trainDesignation of General Motors PowertrainDesignation of General Motors Powertrain5 6Transferable torque19300 Nm gasoline engine26600 Nm gasoline engine32720 Nm gasoline engine45 (Zahn450 Nm gasoline engine, 500 Nm diesel enradfabrikgineFriedrichshafen)350 Nm gasoline engine45 (Gener700 Nm gasoline engine and diesel engineal Motors900 Nm gasoline enginePowertrain)390 Nm, 4th gear 410 Nm, gasoline engine70903907ManufacturerGJRZHGetragJatcoGeneral Motors PowertrainZahnradfabrik FriedrichshafenIn-house part3.2. VariantsModel650iEngineTransmissionTorque converterN63B44O0GA8HP70ZNW250H227TTD13.3. GA8HP transmissionThe new GA8HP45Z and GA8HP70Z automatic transmissions with eight forward gears and one reverse gear are used in the F12.8

F12 Powertrain3. Automatic transmissionSpecial features: Enhanced gearshift spontaneity Greater driving and shifting comfort as a result of a closer gear ratio Higher precision control of the converter lockup clutch at low engine loads High power transmission of the converter lockup clutch Reduced fuel consumption (-5% to -6%)The GA8HP45Z and GA8HP70Z are new developments and will gradually replace the established 6speed automatic transmissions GA6HP19Z TU and GA6HP26Z TU. The overall gear ratio has beenincreased from 6.04 to 7.07; the gear to gear ratios have are now closer, thus also reducing the differences in speed when shifting gear. The weight of the transmission has been reduced significantly using a plastic oil pan and other light weight components.The Electronic Transmission Control (EGS) control unit is integrated in the control unit framework ofthe electronic immobilizer EWS. This provides better protection against theft.It is operated via the gear selector switch or using the shift paddles (SA 2TB, automatic sports transmission, via the steering column switch cluster (SZL)).Mechanical torsional vibration dampers of the second generation are deployed in the torque converter: Turbine torsional vibration damper TTD Two-damper torque converter ZDW. (used on diesel applications of this transmission)9

F12 Powertrain3. Automatic transmissionThe function and structure of the torque converter are described in the “E70 Automatic transmission”training material available on TIS and ICP.The vibration isolation reduces the proportion of slip on the converter lockup clutch and enables alarger operating range with the converter lockup clutch closed. This reduces the fuel consumption by5% to 6% in the consumption cycle (KV01) compared to the TU 6-speed automatic transmission useduntil now.3.3.1. Technical dataGA8HP70ZMaximum powerkW/bhp380/509Maximum torqueNm/ftlbs700/516Maximum permissible engine speed, 1st - 7th gear[rpm]7200Maximum permissible engine speed, 8th gear[rpm]5700Maximum permissible engine speed, reverse gear[rpm]3500Ratio, 1st gear4.70Ratio, 2nd gear3.13Ratio, 3rd gear2.10Ratio, 4th gear1.67Ratio, 5th gear1.29Ratio, 6th gear1.00Ratio, 7th gear0.84Ratio, 8th gear0.67Ratio, reverse gear3.303.4. Transmission emergency releaseThe F12 features the new control concept for operation of the mechanical transmission emergency release. The transmission emergency release is no longer “mechanically” operated from the passengercompartment.3.4.1. Mechanical transmission emergency releaseThe mechanical transmission emergency release may only be operated by specially trained Servicepersonnel.10